Joanne Marcus, PA
NPI 1356507420 · Physician Assistant · Sunnyvale, CA
Enrolled with Medicare as Practitioner - Physician Assistant · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Joanne Marcus, PA is a Physician Assistant provider in Sunnyvale, CA (NPI 1356507420).
Provider details
- NPI number
- 1356507420
- Entity type
- Individual
- Primary specialty
- Physician AssistantPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- PA
- Sex
- Female
- Sole proprietor
- Yes
- License
- PA18562 (CA)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
17 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
Practice location
Mailing address
Registry dates
- Enumerated
- 2008-07-29
- Last updated
- 2018-01-12
Frequently asked questions
- What is Joanne Marcus's NPI number?
- Joanne Marcus's National Provider Identifier (NPI) is 1356507420, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Joanne Marcus's specialty?
- Joanne Marcus is listed in the NPPES registry with a primary specialty of Physician Assistant (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Joanne Marcus located?
- Joanne Marcus's practice location on file with NPPES is 500 E Remington Dr Ste 20, Sunnyvale, CA 94087-2612.
- What is Joanne Marcus's phone number?
- The practice phone number listed in the NPPES registry for Joanne Marcus is (408) 245-4048.
- Does Joanne Marcus accept Medicare?
- Joanne Marcus is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Joanne Marcus's NPI active?
- Yes — Joanne Marcus's NPI (1356507420) is active in the NPPES registry as of the last update on 2018-01-12.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.